or
Hydrion AB pH Paper In Double Roll Dispenser 1ea. Hydrion A pH roll measures 2-10 even units while B roll measures 1-11 odd units. Wide Range Papers offer a sharp color change for each full pH unit. Lucite dispenser contains two 15 Foot Rolls of pHydrio
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Hydrion AB pH Paper In Double Roll Dispenser 1ea. Hydrion A pH roll measures 2-10 even units while B roll measures 1-11 odd units. Wide Range Papers offer a sharp color change for each full pH unit. Lucite dispenser contains two 15 Foot Rolls of pHydrio
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